Tomas has changed little since strengthening back into a tropical storm late Wednesday afternoon.
Tomas is forecast to intensify into a hurricane Friday morning as it passes just west of Haiti. For that reason a hurricane warning is now in effect for Haiti. A hurricane warning means hurricane conditions are expected somewhere in the warning area withing 24 to 36 hours.
A tropical storm watch remains in effect for Jamaica, the Cuban provinces of Guantanamo, Santiago De Cuba and Holguin and the southern coast of the Dominican Republic from the Haiti border east to Barahona.
Even though Tomas has not intensified at all since late Wednesday afternoon it is forecast to begin strengthening later tonight.
Rainfall from Tomas moves into Jamaica later tonight and lingers through Thursday night.
The heavy rain moves into Haiti and the Dominican Republic Thursday and lingers through Friday night.
Rainfall of 30 to 70mm is expected in Jamaica, but in Haiti and the Dominican Republic rainfall could total 130mm to 180mm with some amounts up to 380mm possible in the mountains. Life-threatening flooding and mud slides are likely in and around the mountains.